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Web Offset Press Erection

Web Offset Press Electronic & PLC Upgrade

Our client, a leading newspaper printing house in Dhaka, was facing critical daily shut downs on their main web offset printing line. The printing line, running at 45,000 copies per hour, suffered from sudden communication failures between the control console and the mechanical cylinders. The manufacturer declared the drive control system obsolete, suggesting a full control system replacement with a long lead time and a high capital requirement.

Electro Soft BD was called to find a cost-effective, immediate solution to minimize printing delays. Our senior electrical and logic engineers immediately set up diagnostic test equipment on-site to run a detailed analysis of the print control bus lines and logic controllers.

Diagnostics Panel Electrical Panel Setup

Our diagnostics pinpointed the root cause: intermittent 24V supply drops from the main power module and localized logic code corruption inside the main Siemens S7 PLC rack. The control software failed to register print registration timing signals, leading to automatic shutdown triggers.

Key Work Deliverables

We restored press reliability through a series of targeted electronic repairs and calibration tasks:

  • Obsolete Siemens PLC module retrofit and replacement.
  • Logic code recovery, verification, and custom parameter optimization.
  • Stabilizing control terminal voltage through new line filtering capacitors.
  • Complete control bus cable shielded rewiring to prevent electromagnetic interference.
  • Full speed test runs at 45,000 copies/hour with zero faults.

Results & Customer Impact

By opting for Electro Soft BD's diagnostic and component-level repair services rather than a full control system replacement, the client saved millions. Most importantly, the press was back online and printing newspapers in just 3 days instead of weeks. The print registration remained perfectly sharp at high speeds, restoring the print house's daily publication schedules and confirming our team's expertise in printing press electronics.

Project Details
Category

Automation & PLC Upgrade

Completion Date

15 October, 2025

Client Name

Dhaka Daily Printing Press

Lead Engineer

Engr. Kamrul Islam (Senior PLC Engineer)

Location

Tejgaon Industrial Area, Dhaka

Client Rating

Need A Brand New Project